[Bug 197842] kernel memory leak
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bugzilla-noreply at freebsd.org
Fri Feb 20 07:57:32 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197842
Bug ID: 197842
Summary: kernel memory leak
Product: Base System
Version: 10.0-RELEASE
Hardware: i386
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs at FreeBSD.org
Reporter: ota at j.email.ne.jp
After process exits, kernel memory isn't released in some cases and that
results failures on new process creations. The problem seems to be also
hardware dependent as I only see this happening on only one of three machines I
tested.
This started happening since 10.0-RELEASE and see it on 10.1-RELEASE as well.
11-CURRENT does not have this issue.
When the problem occurs, I see one of these 2 errors printed:
pmap_mapdev: Couldn't alloc kernel virtual memory
vm_thread_new: kstack allocation failed
One of the easiest way to reproduce the problem is by benchmarks/forkbomb.
% forkbomb -f
https://svnweb.freebsd.org/base?view=revision&revision=272667 seemed somewhat
similar problem but code base is quite different on 10-stalbe and 11-current.
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